Wanne Wurin Tabbacin Fashewa DIIBT4

Sunan dIIBT4 yana nufin Class II, Ƙididdiga mai tabbatar da fashewar rukuni B.

II	B	T4	Gb	IP64
Nawa I	Methane	T1 450 ℃	Ma Babban matakin kariya	IP64
		T2 300 ℃
			Mb Babban matakin kariya
		T3 200 ℃
I Surface Materials	Propane		Ga Babban matakin kariya
		T4 135 ℃
	Ethylene		Gb Babban matakin kariya
		T5 100 ℃
	Hydrogen, Acetylene		Gc Kariyar matakin gabaɗaya
		T6 85 ℃

Prefix 'd’ yana nuna nau'in shinge mai hana harshen wuta, an tsara shi ta yadda duk wani fashewa na ciki ya ƙunshi ba tare da lalata shinge ba da hana yaduwar fashewa a waje;

IIB yana ƙayyade nau'in gas ɗin da ake amfani da shi;

T4 yana nuna cewa iyakar samfurin zafin jiki ya rage a kasa 130 ° C.